The 183-metre long line over Justin Herman Plaza will run from 10 a.­m.­ to 7 p.­m.­ daily until April 18 2010.­ It was set up by officials from British Columbia looking to lure tourists to the province this summer.­

People are waiting hours Thursday to climb up a scaffold tower, get belted into a harness and cruise past the Ferry Building while looking off to the San Francisco-Oakland Bay Bridge.­

The ride, modelled on a zip line set up in downtown Vancouver during the Olympics, is free.­

Photographer's tips: In order to give the motion blur effect in the background, I often used slow shutter (with the S-mode).­ And to prevent the camera from focusing on the background, I often had to use manual focus.­